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Connections Between Solids and Discrete Molecules

The crystalline structure of the high-temperature superconductor YBa2Cu307, showing the different planes of copper oxide layers. Systematic oxide vacancies along the z-axis occur in the Y planes of the material. (Color legend  [Pg.383]

TABLE 11.9 A comparison between terms used in the band theory of solids and those in MOT of discrete molecules. [Pg.384]

Which of the following is the best choice for a unit cell Explain your answer. [Pg.384]

In Example I I -2, it was proved that the packing efficiency for the fece-centered cubic Bravais lattice is 74%. What is the packing efficiency of the body-centered cubic Bra-vais lattice Show all work. [Pg.384]

Some elements show polymorphism they can exist in more than one type of crystalline form. Iron is an example. At room temperature, iron exists as ferrite, or a-Fe, and is a magnetic body-centered cube. Between 906-1403 °C, however, an allotrope of iron (called y-Fe) exists in a nonmagnetic fece-centered cube. [Pg.384]


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